Originally Posted by 472gt
this sounds about right like its flooding until u stamp on the gas what do u mean by quad rings do the 780 holleys? would blown power valve cause this?
Nah, different setup between Thermoquad and Holley. The Carters have little square o-rings (quad rings) between the top and middle housings to seal the fuel passage to the main jets. When one leaks, you get overfueling to two (sometimes four depending on how bad a leak) cylinders only, which gives a miss.
The Holley basics have been posted above; progressive ports, power valve, etc.